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Direct post-cracking of volatile matter from coal carbonisation is studied at laboratory, pilot and full scale. The effects of process variables ( temperature, residence time, coal composition) on the yields and the chemical composition of products are investigated. The cracking of volatile matter is measured by severity indices for each product: - H(2)/CnHm and % CO for the gas - Benzene/benzene + toluene + xylenes for the benzols - selectives extraction, naphthalene/Me naphthalene, different types of THF-I for the tars - analysis of carbon deposits (carbon black, pyrolytic carbon) These indices are similar to the severity indices used in the oil industry (naphtha - steam cracking) and can characterise the cracking level of volatile matter in the coke oven.

Additional information

Authors: CERCHAR, CERCHAR, Centre de Pyrolyse de Marienau, Forbach (FR)
Bibliographic Reference: EUR 12352 FR (1990) 105 pp., MF, ECU 8, blow-up copy ECU 22.50
Availability: (2)
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